Container perforator



Jan. 8, 1952 R. DAVIS 2,581,469

CONTAINER PERFORATOR' Filed Sept. 29, 1947 wi em? HIS AT TORN EY S.

Patented Jan. 8, 1952 UNITED STATES PATENT OFFICE CONTAINER PERFORATOR Roy Davis, Overland, Mo. Application September 29, 1947, Serial No. 776,794

This invention relates to receptacle openers and in its more specific aspects is directed to a device for piercing the closures of containers for liquid food.

The object of this invention is to provide a device for quickly and easily perforating the closure for condensed milk containers in two diametrically disposed places and which may also serve as a closure for such containers after iercing.

In the drawings:

Fig. 1 is a plan view of a device incorporating the invention,

Fig. 2 is a side elevational view thereof with parts broken away to show details,

Fig. 3 is a bottom plan view of the device incorporating the invention,

Fig. 4 is a section view taken along the line 4-4 of Fig. 1 applied to a container; and

Fig. 5 is a perspective view of the cutter mecha nism and the support therefor.

Referring now to the drawings, numeral i designates a cylindrical tubular dished member provided with a centrally disposed aperture in its closed end. A circular plate 2 is supported in the dished member and is spaced a suitable distance from the closed apertured end thereof. This spacing is maintained by a plurality of sleeve members 3 disposed between the dished member I and the plate. Rivets 4 extend through each sleeve and through apertures in plate 2 and dished member I to rigidly hold plate 2 in position. rality of notches 5 whose primary function is to aid in cleaning the device and it is also provided with two diametrically disposed cutter slots 6, 6.

A cutter supporting member 1 is disposed in the aperture in the closed end of dished member l and comprises a hollow cylindrical member 8, one end of which is closed and the other opened. A plurality of flanges 9, 9 is provided thereon, preferably the same in number as rivets 4 and having apertures In therein through which sleeves 3 extend in order to guide the movement of member 1. dished member I in a manner so that it may freely move axially thereof.

A cutter bar I I is held in the supporting member I. The cutter bar is preferably formed from flat plate or sheet stock and has a projection thereon that extends into cylindrical portion 8 of member I. A. plate 13 is also arranged in cylindrical member 8 and is disposed at right angles to cutter ll whose function is to prevent tipping of the cutter bar I I. Blades l4, 14 are The plate 2 is provided with a plu- The member 1 is fitted in the 2 Claims. (01. 30-61) I after cutter blades [4, i4 engage the top of the container compresses the spring I5 and places member 1 and cutter H in the full line position indicated in Fig. 4. Pressure is now applied to member I which causes the cutter blades l4, M to perforate the container top, the cutter bar It and member I being moved to the dotted line position of Fig. 4 to complete the cutting operation. The device may be used as a cover for the container when it is stored in the refrigerator or any other suitable place, thereby keeping the container contents clean and sanitary. The device is rotated when used as a closure until the blades l4 enter the container top perforations.

What I claim is:

1. A container perforating and closure device comprising a tubular member provided with an apertured closure at one end thereof; a plate provided with cutter blade apertures; means for supporting said plate in said tubular member which includes a plurality of circumferentially arranged sleeves for maintaining a predetermined spacing between said apertured closure and said plate; a second tubular member provided with a closure at one end thereof and arranged in the aperture of said apertured closure; a plurality of apertured flanges secured to the other end of said second tubular member, said sleeves disposed within the apertures in said flanges and capable of movement relative thereto; a cutter bar; means for supporting said cutter bar on the flanged end of said second tubular member; cutting blades on said bar and movable in the apertures in said plate; and a spring for moving said tubular members relative to each other.

2. A container perforating and closure device comprising a tubular member to be fitted over one end of the container; an aperturedl closure at one end of said tubular member; a plate disposed within said tubular member and provided with cutter slots; means for mounting said plate in said tubular member and spacing it from said apertured closure; a second tubular member provided with a closure and extending through the aperture in said first mentioned closure and adapted for movement along the longitudinal axis of said first mentioned tubular member; means on said second tubular member cooperating with said first mentioned means for guiding the movement of said second tubular member; a cutter; means for supporting said cutter on one end of said second tubular member and for movement in the slots in said plate; and a spring for moving said tubular members relative to each other.

ROY DAVIS. I

4 REFERENCES CITED The following references are of record in the file of this patent:

UNITED S TATES PATENTS Number Name Date 1,887,592 Goodfellow Nov. 15, 1932 1,888,411 Schilling Nov. 22, 1932 1,923,779 Dye Aug. 22, 1933 10 2,064,716 Baker Dec. 15, 1936 

